Azure TableEntity，覆盖 Write 和 ReadEntity 方法

Question

我有一个 Azure 表，有一些像这样的枚举

pk   rk   en     fr     de   ...

foo  1  'E-f1' 'F-f1' 'D-f1' ...
foo  2  'E-f2' 'F-f2' 'D-f2' ...

bar  1  'E-b1' 'F-b1' 'D-b1' ...
bar  2  'E-b2' 'F-b2' 'D-b2' ...
bar  3  'E-b3' 'F-b3' 'D-b3' ...

en , fr , de等...是语言代码，分别是表中的列名。

当用户选择一种语言时，我需要为“foo”和“bar”选择下拉菜单
我需要显示下拉菜单。

我创建了一个 DescriptionEntity ，有一个 Description应该保留 'en' 或 'fr' 或 'de' 文本值，具体取决于当前的用户界面语言。

以下代码是否替换了 Description属性与 Azure 表中的当前语言值并分别读取它，或者我误解了一些东西(因为文档中不是很清楚)......？

public class DescriptionEntity : TableEntity
{
    public string Description { get; set; }
    private string lang;

    public DescriptionEntity(string lang) {
        this.lang = lang;
    }

    public override void ReadEntity(IDictionary<string, EntityProperty> properties, OperationContext operationContext) {
        base.ReadEntity(properties, operationContext);
        if (properties.ContainsKey(this.lang)) {
            this.Description = properties[this.lang].StringValue;
        }
    }

    public override IDictionary<string, EntityProperty> WriteEntity(OperationContext operationContext)
    {
        var x = base.WriteEntity(operationContext);
        var descriptionValue = this.Description;
        if (x.ContainsKey(lang)) {
            x[lang].StringValue = this.Description;
        }
        else {
            x.Add(lang, new EntityProperty(this.Description));
        }
        x.Remove("Description");
        return x;
    }
}

Answer 1

I created a DescriptionEntity, that has a Description that should keep the 'en' or 'fr' or 'de' text value, depending on the current user interface language.

Does the following code replace the Description property with the current language value in the Azure Table and read it respectively, or I misunderstand something (because there is not very clear for the in the documentation)...?

根据我对以下示例的测试，您的代码应该替换 Description具有基于当前用户界面语言的语言值的属性。
我的 Azure 表中的实体:

说明实体类:

public class DescriptionEntity : TableEntity
{
    public DescriptionEntity(string pk, string rk)
    {
        this.PartitionKey = pk;
        this.RowKey = rk;
    }
    public DescriptionEntity() { }

public string Description { get; set; }

    string lang = "en";

    public override void ReadEntity(IDictionary<string, EntityProperty> properties, OperationContext operationContext)
    {
        base.ReadEntity(properties, operationContext);
        if (properties.ContainsKey(lang))
        {
            this.Description = properties[lang].StringValue;
        }
    }
}

查询实体:

TableQuery<DescriptionEntity> query = new TableQuery<DescriptionEntity>().Where(TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, "foo"));

foreach (DescriptionEntity entity in table.ExecuteQuery(query))
{
    string languages = entity.Description;
}